usp10.dll in the Unicode Scripts Processor in Microsoft Windows XP SP2 and SP3 and Windows Server 2003 SP2 allows remote attackers to execute arbitrary code via a crafted OpenType font, aka "Uniscribe Font Parsing Engine Memory Corruption Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17442
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-060